Features_x000D_ _x000D_ AUTOMATIC RESET: The protector has an automatic reset function, which can prevent long term power failure and ensure its service life._x000D_ QUICK RESPONSE: The protector has a quick response speed and sensitive internal components, saving you working time and making it more practical._x000D_ DIGITAL DISPLAY: The digital display screen displays the working voltage and current in real time, you can monitor the abnormality and use it with confidence._x000D_ EASY INSTALLATION: This 3 phase protector is installed by DIN rail, which is simple and easy to operate, and is stable and firm after installation._x000D_ SAFE TO USE: When the protector is overloaded, it will automatically cut off the power, and the power will be supplied normally within the specified power, so as to prevent the danger of overvoltage and undervoltage._x000D_ Specification_x000D_ _x000D_ Item Type: 3 Phase DIN Rail Voltmeter _x000D_ Material: PC_x000D_ Model: CHSG 40_x000D_ Load Current: 1-63A_x000D_ Overvoltage Setting Value: AC390-500V_x000D_ Undervoltage Setting: AC370V-140V_x000D_ Power Off Time (Set 1-300s): 5-300S(V), 30-300S(I)_x000D_ Installation: Approx. 35mm x 1.4in DIN rail_x000D_ _x000D_ How to Use_x000D_ _x000D_ Package List_x000D_ _x000D_ 1 x 3 Phase DIN Rail Voltmeter_x000D_ 1 x Instruction _x000D_ _x000D_